Monthey: observed built density
Municipality in the canton of Valais · FSO no. 6153 · Parcel data as of July 2025
The parcel data covers only part of the land in the canton of Valais, so figures here may be incomplete.
- Parcels
- 4’841
1 % of the canton
- Municipal zones
- 50
- Median utilization
- 54 %
Canton: 7 %
Switzerland: 10 %
- Median GFZ
- 0.14
Canton: 0.07
Switzerland: 0.09
- Median height
- 9.1 m
Canton: 8.4 m
Switzerland: 9.5 m
- Median floors
- 2.3
Canton: 2.3
Switzerland: 2.3
About Monthey
Monthey is a municipality in the canton of Valais. The parcel data lists 4’841 parcels in 50 municipal zone types. The zone types with the most parcels are zone habitation faible densité A (R2) (701), zone habitation faible densité B (R1) (684) and Aire forestière (677).
The median parcel is built to a volume utilization of 54 %; half of the parcels lie between 6 % and 115 %. The canton median is 7 %, so Monthey sits above it.
The median building height is 9.1 m at 2.3 floors, and the median floor-area ratio (GFZ) is 0.14. Parcels built in the last 20 years reach a mean volume utilization of 115 % (1’211 parcels), higher than the 90 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| zone habitation faible densité A (R2) | 701 | 92 % |
| zone habitation faible densité B (R1) | 684 | 87 % |
| Aire forestière | 677 | 0 % |
| zone habitation faible densité de montagne (M1) | 432 | 66 % |
| Zone agricole 2 | 334 | - |
| zone habitation faible densité (R3) | 260 | 91 % |
| zone habitation forte densité A (R8) | 244 | 84 % |
| zone centre | 217 | 100 % |
| zone habitation moyenne densité C (R6) | 164 | 100 % |
| zone agricole 1 | 144 | - |
| zone agricole protégée | 132 | - |
| zone industrielle (A1) | 116 | 29 % |
| Other zones (35) | 736 | - |
Volume utilization (ratioV)
Of the 4’779 parcels with a value, half lie between 6 % and 115 %. The median is 54 % and the mean 83 %.
Share of parcels by range
- below 50 %49 %
- 50 % to below 100 %19 %
- 100 % to below 150 %18 %
- 150 % and above14 %
Floor-area ratio (GFZ)
Of the 4’777 parcels with a value, half lie between 0.05 and 0.37. The median is 0.14 and the mean 0.37.
Share of parcels by range
- below 0.5083 %
- 0.50 to below 1.008 %
- 1.00 to below 1.504 %
- 1.50 and above5 %
Building height
Of the 2’735 parcels with a value, half lie between 7.5 m and 11.5 m. The median is 9.1 m and the mean 10.1 m.
Share of parcels by range
- below 8 m32 %
- 8 m to below 12 m47 %
- 12 m to below 20 m19 %
- 20 m and above3 %
Number of floors
Of the 2’180 parcels with a value, half lie between 1.8 and 3.2. The median is 2.3 and the mean 2.7.
Share of parcels by range
- below 210 %
- 2 to below 348 %
- 3 to below 532 %
- 5 and above11 %
Building age cohorts
Mean volume utilization of the parcels built inside each window, from all years on record down to the last five. The windows overlap: the last 20 years include the last 5.
| Built in | Parcels | Mean utilization |
|---|---|---|
| All years | 4’841 | 90 % |
| Last 60 years | 2’217 | 131 % |
| Last 40 years | 1’733 | 127 % |
| Last 20 years | 1’211 | 115 % |
| Last 15 years | 1’048 | 113 % |
| Last 10 years | 278 | 138 % |
| Last 5 years | 154 | 143 % |
How to read this page
room shows observed built density: what has been built on the parcels, not what the zoning permits. Volume utilization (ratioV) compares the built volume of a parcel with the reference volume of its municipal zone type. The floor-area ratio (GFZ) is floor area divided by parcel area; building height and number of floors are taken from the buildings on a parcel. Figures pool all municipal zones of the area. Medians and quartiles are read from bins 10 points (ratioV), 0.1 (GFZ), 2 m (height) and 1 floor wide, so they are exact to within one bin; means are exact. A parcel counts in a distribution only when the parcel data has a value for it. The floors distribution leaves out parcels without a building (0 floors).